Cursor arrow does not become hand-with-finger over some links.

Question

Recently, on some web pages, the arrow cursor doesn't become a pointing finger when placed over a link on a web page. Usually these are links at the top of the screen. If I try to right-click to open the link, the "open" is gray (inactive). For instance, on the current Firefox page, I cannot click on the Sign Out, Inbox, Other Applications, etc. I cannot click on the Search Firefox Help display.
However, I can click on the Features, Mobile, Add-ons, etc. at the bottom of the screen.

Answer 1

Recently, the Yahoo Toolbar and the Babylon extension have been reported to cause that problem. They seem to overlap invisibly over the top of the web page display. If you have either or both, uninstall or disable them/it, or see if an update is available that solves the problem.
*See --> http://support.mozilla.com/en-US/kb/Uninstalling+add-ons
*See --> http://support.mozilla.com/en-US/kb/Cannot%20uninstall%20an%20add-on
*See --> http://kb.mozillazine.org/Uninstalling_toolbars
If that does not solve the problem:
*See --> [http://support.mozilla.org/en-US/kb/Troubleshooting+extensions+and+themes Troubleshooting extensions and themes]
*See --> [http://support.mozilla.org/en-US/kb/Troubleshooting+plugins Troubleshooting plugins]
*See --> [http://support.mozilla.org/en-US/kb/Basic+Troubleshooting Basic Troubleshooting]
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Not related to your question, but...
You may need to update some plug-ins. Check your plug-ins and update as necessary:
*Plug-in check --> http://www.mozilla.org/en-US/plugincheck/
*Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.org/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox]
*Adobe PDF Plug-In For Firefox and Netscape: [https://support.mozilla.org/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox]
*Shockwave Flash (Adobe Flash or Flash): [https://support.mozilla.org/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox]
*'''''Next Generation Java Plug-in for Mozilla browsers''''': [https://support.mozilla.org/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]